Exploiting Background Information in Knowledge Discovery from Text

  • Authors:
  • Ronen Feldman;Haym Hirsh

  • Affiliations:
  • Mathematics and Computer Science Department, Bar-Ilan University, Ramat-Gan, Israel 52900. E-mail: feldman@cs.biu.ac.il;Department of Computer Science, Rutgers University, Piscataway, NJ USA 08855. E-mail: hirsh@cs.rutgers.edu

  • Venue:
  • Journal of Intelligent Information Systems
  • Year:
  • 1997

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper describes the FACT system for knowledge discovery fromtext. It discovers associations—patterns ofco-occurrence—amongst keywords labeling the items in a collection oftextual documents. In addition, when background knowledge is available aboutthe keywords labeling the documents FACT is able to use this information inits discovery process. FACT takes a query-centered view of knowledgediscovery, in which a discovery request is viewed as a query over theimplicit set of possible results supported by a collection of documents, andwhere background knowledge is used to specify constraints on the desiredresults of this query process. Execution of a knowledge-discovery query isstructured so that these background-knowledge constraints can be exploitedin the search for possible results. Finally, rather than requiring a user tospecify an explicit query expression in the knowledge-discovery querylanguage, FACT presents the user with a simple-to-use graphical interface tothe query language, with the language providing a well-defined semantics forthe discovery actions performed by a user through the interface.